CVE-2017-9856 Weak cryptography in n/a
Attackers can decrypt sniffed passwords from SMA solar inverters using weak encryption, allowing unauthorized device authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-9856?
CVE-2017-9856 is a low-severity vulnerability in n/a, published on 5 Aug 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue was discovered in SMA Solar Technology products. Sniffed passwords from SMAdata2+ communication can be decrypted very easily. The passwords are "encrypted" using a very simple encryption algorithm. This enables an attacker to find the plaintext passwords and authenticate to the device. NOTE: the vendor reports that only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
Weakness: CWE-256
Which versions are affected by CVE-2017-9856?
It affects 39 products.
Products include Sma Sunny Boy 1.5 Firmware, Sma Sunny Boy 2.5 Firmware, Sma Sunny Boy 3.0 Firmware, Sma Sunny Boy 3.6 Firmware, Sma Sunny Boy 3000tl Firmware, Sma Sunny Boy 3600 Firmware and 33 more.
How do I fix CVE-2017-9856?
No fix has been published for CVE-2017-9856 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-9856 being exploited?
There is no known exploitation of CVE-2017-9856 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-g5j9-p3rw-c77m.